Câu hỏi: We couldn't find a taxi _____ we walked home.

A. so

B. because

C. although

D. such

Câu 1: Some students are more ________ than others.

A. successful

B. cleverer

C. braver

D. slower

Câu 2: Excuse me, I think you've ________ a mistake in our bill.

A. Made

B. Done

C. Had

D. given

Câu 3: _____ he finished his homework, he played his guitar and sang.

A. after

B. although

C. so that

D. unless

Câu 4: .……………lucky he is!

A. what

B. what a

C. how

D. how a

Câu 5: The dog ________ you if it hadn´t been tied up.

A. would bite

B. will bite

C. would have bitten

D. bites

Câu 6: .……………silly mistake!

A. what

B. what a

C. how

D. how a